Sheet-printing machine.



No. 644,23I. Patented Feb. 27, I900. A. JOHNSON O. A. J. STONE.

SHEET PRINTING MACHINE.

(Application filed June 27, 1899.) ,(No Model.) 2 Sheets-Sheet l,

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No. 644,23I. v Patented Feb- 27, I900. A. JOHNSON & A. J. STONE.

SHEET PRINTING MACHINE.

(Application filed June 27, 1899.)

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' (No Model.)

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rrnn STATES ALFRED JOHNSON, OF NEW? YORK, N. Y., AND ANDRE? J. STONE, OFLONDON, ENGLAND.

SHEET-PRINTING MACHINE.

SPECIFICATION forming part of Letters Patent No. 644,231, dated February27, 1900.

Application filed June 27,1899. Serial No. 722,070. (No model.)

To all whom it may concern:

Be it known that we, ALFRED JOHNSON, a resident of New York, (Brooklyn,)in the county of Kings, State of New York, and AN- DREW JACKSON STONE, aresident of London, E. 0., England, both citizens of the United States,have invented certain new and useful ImprovementsRelatingtoSheet-PrintingMachines, of which the following is aspecification.

This invention relates to sheet-printing machines, and has forits objectto provide means for laying between the sheets as they are piled on thepiling-table slip-sheets, by means of which offset is prevented.Hitherto slipsheets have been laid on by hand, and as the result in suchcases the speed of the machine had necessarily to be decreased.

The invention is applicable to machines having an ordinary fly-deliveryor a reciprocating delivery, but is more especially applicable to thetype of machine described in the specification to Letters Patent No.610,491, of September 3, 1896.

The invention is illustrated in the accompanying drawings, in which-Figure 1 is a vertical longitudinal section of a piling-table arrangedwith fly-delivery mechanism and means for the insertion of slip-sheetsaccording to the invention. Fig. 2 is a reverse longitudinal sectioncorresponding to Fig. 1, in which the reciprocating carriage-frame is atthe opposite extremity of its stroke and in the act of seizing aslip-sheet. Fig. 3 is a plan corresponding to Fig. 2.

In carrying the invention into effect, as illustrated in theaccompanying drawings, flyfingers A are suitably mounted upon atransverse oscillating shaft B, to which motion is communicated from themain shaft of the printing-machine by any suitable means, such as by acam or crank and connecting-rod, the shaft being oscillated through anangle of somewhat less than one hundred and eighty degrees. Asillustrated in the drawings, the fly-fingers A are preferably mountedupon the cross-shaft B by being secured to a cross-bar O, fastened tothe shaft at each end in shoes or brackets O, and the shaft B is carriedat each side by means of brackets D D. The brackets D D by means of lugs01 support one end of the piling-table E, the piling-table beingsupported at its opposite end by means offeet or a frame, such as c.Above the piling-table at a suitable distance apart are provided rails FF, such rails being mounted, respectively, upon the brackets D D by pins(1', so that they may be capable of being upwardly lifted above thepiling-table. The rails are supported in their horizontal position bymeans of stops d abutting against projections provided upon therespective rails, and the rails are connected together at their oppositeextremities by means of a transverse rod R, having shoulders r, whichmaintain the rails at a determined distance apart, the rod being securedin position by means of nuts r and being capable of removal by beingmounted in slots r provided in the rails to receive it. By so connectingthe rails together the rod R is capable of ready removal to permit ofthe carriage-frame being taken away.

Upon the rails F F are mounted carriages G G, each of which consists ofa plate H, upon the outer side of which grooved rollers I are mounted,having peripheral grooves corresponding to the width of the rails F E,the rollers being secured in position upon pins or spindles a, suitablyheld upon the plate H. The carriages G are suitably connected togetherby means of a rod J, and upon this rod are provided, at intervals apart,fixed jaws K, while an oscillating shaft or spindle L is also mountedand supported by the carriages G, so as to be parallel to the fixed rodJ, and gripper-arms M are fixedly mounted thereupon at intervals and inpositions corresponding to the jaws K, so that when the gripper-arms aremoved upward toward the end of the stroke of the carriage-frame theyshall come in contact with the edge of the respective jaws K and seizethe slip-sheet.

Upon the oscillating shaft or spindle L, at each end, a pawl-operatingleverN is pro vided, by means of which the shaft or spindle L isoscillated, so as to open and close the gripper-arms M. This is effectedon the re ciprocation of the carriage-frame by contact of theoperating-pawls N with stops 0 O, which may be fixedly mounted atopposite extremities of the rails, the one, 0, being pref erablyarranged upon one rail and the other, 0, upon the other. The one stop 0,by contact with one of the operating-pawls N at the forward extremity ofthe stroke of the carriage-frame, causes the gripper-arms M to close andgrip the slip-sheet 19, while the other stop 0' makes contact with theother operating-pawl and causes the gripper-arms M to open at theopposite extremity of the stroke of the carriage-frame. The opening andclosure of the gripper-arms may be timed so that the slip-sheets may beseized at any particularpoint and deposited at any particular place uponthe piling-table by arranging the stops 0 O to be capable of adjustment.This may be done by mounting the stops 0 upon a bracket Q and securingthat bracket by means of a pin q within a longitudinal slotf, providedwithin the respective rails F or F, in which it is capable oflongitudinal movement and where it is capable of being secured in anylongitudinal position.

The gripper-arms M are positively maintained open or closed by means ofa spring U, which is preferably mounted upon one of the carriages G andhas its extremity hearing upon a projection of the adjacentoperating-pawl. When the grippers are open, (see Fig. 1,) the springpresses directly in the line of the projection m, while when thegrippers are closed the spring exercises a slight pressure, tending toturn the shaft or spindle L, and thereby maintain the grippers closedwith a slight pressure. The carriages G are prevented from beinguplifted and from being withdrawn, except by sliding along the rails, bythe provision upon the plate H of transverse pins h h, which bear underthe raiIsB F.

A supplementary slip-sheet-feeding table P is provided. This may consistof a surface 19', supported ,upon transverse bars 19 these bars havingsecured thereto feet 19 for holding the table at one end, while at theopposite end the bars 10 are formed hook-shaped, so as to engage withthe transverse bar R, by means of which the two rails F F are securedtogether at their outer extremities. The slipsheets 1) may be put intoproper register by means of stops 19 The reciprocating motion of thecarriageframe is effected from the oscillating shaft B by means ofconnecting-rods S, secured at one end to the extremities of crank-armsT, their other extremities being formed hook-shaped and riding upon atransverse rod J, by means of which the carriages G are connected. Itwill thus be understood that the sheet after being printed in the pressis deposited upon the fly-fingers A, and on the oscillation of the shaftB the fly-fingers A are caused to rotate in the direction indicated inthe drawings by an arrowand so deposit the printed sheet upon thepiling-table E. Sim ultaneouslywith this rotation of the fly-fingers thecarriage-frame is caused to move outwardly, ready to bring back aslip-sheet on its return stroke. out extremity of the stroke thegripper-arms M are closed, as hereinbefore described, and seize theslip-sheet p, which is previously arranged in position to be received bythem upon the table P. The slip-sheet is retained in position upon thetable by means of stops, and the grippers while seizing the slip-sheetlift it clear of such stops. The reciprocating frame then takes theslip-sheet and deposits it upon the piling-table. and upon the sheetlast deposited upon the pile, the grippers releasing the sheet at thebackward extremity of the stroke.

It will be understood that by the employment of the invention theprinting-machine may be run at twice or three times the speed ,thatwould be necessary when inserting slipsheets between the printed sheetson the pile by hand, while, moreover, the layer-on can work with greaterease.

Having now described our invention, what we claim as new, and desire tosecure by Letters Patent, is-

1. In combination, the side rails, the carriages running thereon, thegripper mechanism carried by the carriage, means for operatin g saidgripping mechanism, the rock-shaft journaled at oneend of said trackwith means for operating the same, and the fly-fingers carried by saidrock-shaft.

2. In combination, the brackets, the rails hinged thereto, therock-shaft journaled in the brackets and carrying the fi y-fingers, thecarriages traveling on said rails and carrying grippers and operatingconnections between the rock-shaft and carriages, substantially asdescribed.

In witness whereof we have hereunto set our hands in presence of twowitnesses.

ALFRED JOHNSON. A. J. STONE. Vitnesses:

G. F. WARREN, W. EDWARD Evans.

At the,

